vulnerability
Ubuntu: (CVE-2022-23527): libapache2-mod-auth-openidc vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:N/AC:M/Au:N/C:N/I:P/A:N) | Dec 14, 2022 | Jun 26, 2025 | Aug 18, 2025 |
Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:P/A:N)
Published
Dec 14, 2022
Added
Jun 26, 2025
Modified
Aug 18, 2025
Description
mod_auth_openidc is an OpenID Certified™ authentication and authorization module for the Apache 2.x HTTP server. Versions prior to 2.4.12.2 are vulnerable to Open Redirect. When providing a logout parameter to the redirect URI, the existing code in oidc_validate_redirect_url() does not properly check for URLs that start with /\t, leading to an open redirect. This issue has been patched in version 2.4.12.2. Users unable to upgrade can mitigate the issue by configuring mod_auth_openidc to only allow redirection when the destination matches a given regular expression with OIDCRedirectURLsAllowed.
Solution
no-fix-ubuntu-package
References
- CVE-2022-23527
- https://attackerkb.com/topics/CVE-2022-23527
- CWE-601
- URL-https://github.com/zmartzone/mod_auth_openidc/blob/v2.4.12.1/auth_openidc.conf#L975-L984
- URL-https://github.com/zmartzone/mod_auth_openidc/commit/87119f44b9a88312dbc1f752d720bcd2371b94a8
- URL-https://github.com/zmartzone/mod_auth_openidc/security/advisories/GHSA-q6f2-285m-gr53
- URL-https://www.cve.org/CVERecord?id=CVE-2022-23527
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